Key points are not available for this paper at this time.
Users often wish to participate in online groups anonymously, but misbehaving users may abuse this anonymity to disrupt the group's communication. Existing messaging protocols such as DC-nets leave groups vulnerable to denial-of-service and Sybil attacks, Mix-nets are difficult to protect against traffic analysis, and accountable voting protocols are unsuited to general anonymous messaging.
Corrigan-Gibbs et al. (Mon,) studied this question.
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